Grouping feature is designed to support recursive grouping. If you had databases with different names after the first "" (eg. v_koreck..., v_abc_..., v_def_...), you'd probably want group under these names as well.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
This is a feature that helps you to have your tables organized.
To deactivate
Settings -> Navigation panel -> Uncheck 'Group items in the tree'
I know but maybe when two "_" are in the same database name it should trim it after a second one.
Grouping feature is designed to support recursive grouping. If you had databases with different names after the first "" (eg. v_koreck..., v_abc_..., v_def_...), you'd probably want group under these names as well.